/*
 * @(#)ZipConstants.java	1.18 03/12/19
 *
 * Copyright 2004 Sun Microsystems, Inc. All rights reserved.
 * SUN PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
 */

package lhj.java.util.zip;

/*
 * This interface defines the constants that are used by the classes
 * which manipulate ZIP files.
 *
 * @version	1.18, 12/19/03
 * @author	David Connelly
 */
interface ZipConstants {
	/*
	 * Header signatures
	 */
	static long LOCSIG = 0x04034b50L; // "PK\003\004"
	static long EXTSIG = 0x08074b50L; // "PK\007\008"
	static long CENSIG = 0x02014b50L; // "PK\001\002"
	static long ENDSIG = 0x06054b50L; // "PK\005\006"

	/*
	 * Header sizes in bytes (including signatures)
	 */
	static final int LOCHDR = 30; // LOC header size
	static final int EXTHDR = 16; // EXT header size
	static final int CENHDR = 46; // CEN header size
	static final int ENDHDR = 22; // END header size

	/*
	 * Local file (LOC) header field offsets
	 */
	static final int LOCVER = 4; // version needed to extract
	static final int LOCFLG = 6; // general purpose bit flag
	static final int LOCHOW = 8; // compression method
	static final int LOCTIM = 10; // modification time
	static final int LOCCRC = 14; // uncompressed file crc-32 value
	static final int LOCSIZ = 18; // compressed size
	static final int LOCLEN = 22; // uncompressed size
	static final int LOCNAM = 26; // filename length
	static final int LOCEXT = 28; // extra field length

	/*
	 * Extra local (EXT) header field offsets
	 */
	static final int EXTCRC = 4; // uncompressed file crc-32 value
	static final int EXTSIZ = 8; // compressed size
	static final int EXTLEN = 12; // uncompressed size

	/*
	 * Central directory (CEN) header field offsets
	 */
	static final int CENVEM = 4; // version made by
	static final int CENVER = 6; // version needed to extract
	static final int CENFLG = 8; // encrypt, decrypt flags
	static final int CENHOW = 10; // compression method
	static final int CENTIM = 12; // modification time
	static final int CENCRC = 16; // uncompressed file crc-32 value
	static final int CENSIZ = 20; // compressed size
	static final int CENLEN = 24; // uncompressed size
	static final int CENNAM = 28; // filename length
	static final int CENEXT = 30; // extra field length
	static final int CENCOM = 32; // comment length
	static final int CENDSK = 34; // disk number start
	static final int CENATT = 36; // internal file attributes
	static final int CENATX = 38; // external file attributes
	static final int CENOFF = 42; // LOC header offset

	/*
	 * End of central directory (END) header field offsets
	 */
	static final int ENDSUB = 8; // number of entries on this disk
	static final int ENDTOT = 10; // total number of entries
	static final int ENDSIZ = 12; // central directory size in bytes
	static final int ENDOFF = 16; // offset of first CEN header
	static final int ENDCOM = 20; // zip file comment length

}
